From the Big Four exodus to the end of the billable hour, we analyse the structural shifts in UK accounting this week, including HMRC’s looming registration deadline and a record-breaking carve-out market.
Welcome back to the mid-week briefing. As we move into May, the UK accounting profession is being pulled in two directions: a tech-driven push for higher margins through “agentic AI,” and the grounded reality of regional talent wars and fiscal pressures.
From Moore Kingston Smith’s VAT land-grab to HMRC’s looming registration mandate for tax advisers, here is the analysis on the movements that matter this week.
We’re seeing a persistent trend of senior expertise moving from the Big Four to top-tier mid-market firms, as the latter lean into “boutique-style” specialised advisory.
Moore Kingston Smith’s VAT Move: MKS has appointed Mark Treacher as a new VAT Partner. Treacher joins after a 25-year tenure at a Big Four firm. His focus will be on building out a financial services VAT arm, signaling that MKS is targeting the complex transactional work that was previously the sole domain of the largest firms.
UHY Hacker Young’s Internal Engine: Proving that the internal talent pipeline is still vital, UHY promoted Michelle Hughes to Partner in Kent. Hughes, who qualified with the firm in 2019, specialises in complex audits and GAAP compliance, areas where regional firms are increasingly competing for high-value corporate group work.
BKL’s London Momentum: Following their acquisition of RBS in Canary Wharf last week, BKL is successfully integrating their CBPE private equity backing to secure a larger slice of the London owner-managed business (OMB) market.
The rules of engagement for audit are shifting. On 30 April, the Financial Reporting Council (FRC) finalised revisions to ISA (UK) 240 (Fraud) and ISA (UK) 570 (Going Concern). Effective for periods starting from December 2026, these updates mandate a far more proactive approach to detecting fraud.
The move has been welcomed by the ACCA, which described the revisions as a “welcome step” in strengthening auditor responsibilities during economic uncertainty. However, Jessica Bingham, Head of Regional Policy at ACCA, warned that continued focus will be needed to ensure “proportionate” application and to avoid widening the “audit expectation gap.” For practitioners, this translates to an inevitable expansion in audit scope and likely, a necessary conversation with clients about rising fees.
The industry is hitting a tipping point where automation is making time-based billing economically unsustainable. Two major tech shifts this week highlight the pivot toward “value-based” models:
Ravical Workspace Launch: Yesterday, Ravical launched its “Advisory Workspace,” a platform designed to kill the billable hour. It uses AI to spot advisory opportunities across a client base and executes them through verified workflows.
The Logic: If an AI-driven VAT return takes 20 minutes instead of three hours, firms using hourly rates lose 80% of their revenue. Ravical’s platform includes a “billing agent” to help firms price the outcome rather than the minutes spent.
Sage Developer Expansion: At Sage Future, Sage launched Sage Agent Builder and an AI Gateway. This allows developers to build AI agents that “live” inside Sage workflows, performing tasks like reconciliation and forecasting autonomously.
Research from Lubbock Fine shows that UK carve-out deals (where a company spins off a specific division) jumped 8% to 468 deals last year, totaling £63 billion.
The Big Story: Unilever’s potential £33.8 billion sale of its entire food division to McCormick is the “white whale” of current divestments.
A “Flight to Quality” in M&A: While carve-outs are dominating volume, broader M&A value is rising even as deal numbers dip. Investors are paying premiums for firms that have solved the AI-integration puzzle or boast specialist ESG advisory arms.
While firms are focusing on advisory, two critical regulatory clocks are ticking.
Mandatory HMRC Agent Registration: As of 18 May 2026, HMRC will require any tax adviser who interacts with them on behalf of a client to be formally registered.
Action Item: If your firm has not yet set up its Agent Services Account (ASA) under the new regime, you have less than two weeks. This is part of the government’s wider crackdown on “unregulated” tax advice.
MTD for ITSA “Day 30” Check: We are now a month into the live phase for those earning over £50,000. Early reports suggest onboarding friction with the HMRC digital interface. With the first quarterly updates due by 7 August 2026, firms should use this week to audit their migration progress for the £50k+ income cohort.
| Metric | Movement | Impact on Firms |
|---|---|---|
| Employer NICs | +£28bn actual (vs £24bn forecast) | High pressure on payroll budgets and SME hiring |
| CFO Confidence | 6-year low (-57%) | Shift in demand from “Growth Advisory” to “Cost Resilience” |
| Audit Oversight | FRC revised standards (30 April) | Toughened fraud and going concern rules; backed by ACCA |
